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參數資料
| 型號： | DS2118MB |
| 英文描述： | Terminator |
| 中文描述： | 終結者 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 141K |
| 代理商： | DS2118MB |
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090199
FEATURES
Fully compliant with Ultra2 SCSI
Provides Multimode Low Voltage
Differential/Single-Ended (LVD/SE)
termination for 9 signal line pairs
Auto-selection of LVD or SE termination
5% tolerance on SE and LVD termination
resistance
Low power down capacitance of 3 pF
Onboard thermal shutdown circuitry
SCSI bus hot plug compatible
Fully supports actively negated SE SCSI
signals
PIN ASSIGNMENT
DESCRIPTION
The DS2118M Ultra2 LVD/SE SCSI Terminator is both a Low Voltage Differential (LVD) and Single-
Ended (SE) terminator. The multimode operation enables the designer to implement LVD in current
products while allowing the end-user SE backward compatibility with legacy devices. If the device is
connected in an LVD-only bus, the DS2118M will use LVD termination. If any SE devices are connected
to the bus, the DS2118M will use SE termination. This is accomplished automatically inside the part by
sensing the voltage on the SCSI bus DIFFSENS line.
For the LVD termination, the DS2118M integrates two regulated supplies with nine precision resistor
strings. For the SE termination, one regulator and nine precision 110-ohm resistors are used. Three
DS2118M terminators are needed for a Wide SCSI bus.
DS2118M
Ultra2 LVD/SE SCSI Terminator
www.dalsemi.com
32
31
30
29
28
27
26
25
24
23
22
21
20
19
35
34
33
LVD
SE
R9N
R9P
R8N
R8P
HS GND
HS GND
HS GND
R7N
R7P
R6N
R6P
NC
R1P
R1N
R2P
R2N
HS GND
HS GND
R3P
R3N
R4P
R4N
R5P
R5N
ISO
GND
DS2118MB 36-Pin SSOP
36
VREF
NC
TPWR
HVD
HS GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
DIFF_CAP
DIFFSENSE
MSTR/SLV
相關PDF資料 |
PDF描述 |
|---|---|
| DS2118M | Ultra2 LVD/SE SCSI Terminator |
| DS21348G | 3.3V E1/T1/J1 Line Interface |
| DS21348GN | 3.3V E1/T1/J1 Line Interface |
| DS21348 | 3.3V E1/T1/J1 Line Interface |
| DS21348T | 3.3V E1/T1/J1 Line Interface |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DS2118MB/T&R | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:IC TERM SCSI LVD/SE ULT-3 36SSOP |
| DS2118MB/T&R | 功能描述:SCSI 接口集成電路 Ultra3 LVD/SE SCSI Terminator RoHS:否 制造商:Texas Instruments 工作電源電壓:2.7 V to 5.25 V 電源電流:13 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 安裝風格:SMD/SMT 封裝 / 箱體:SSOP-36 封裝:Tube |
| DS2118MB/T,R | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Ultra3 LVD/SE SCSI Terminator |
| DS2118MB+ | 功能描述:SCSI 接口集成電路 Ultra3 LVD/SE SCSI Terminator RoHS:否 制造商:Texas Instruments 工作電源電壓:2.7 V to 5.25 V 電源電流:13 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 安裝風格:SMD/SMT 封裝 / 箱體:SSOP-36 封裝:Tube |
| DS2118MB+T&R | 制造商:Maxim Integrated Products 功能描述:IC TERM SCSI LVD/SE ULT-3 36SSOP |
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